by photomike666 » Tue Dec 20, 2005 12:15 pm
I just had the stearing head bearings done at 50,000k, chain & sprocket at about 40. I think they were all original, as the bike only had 12,000k on the clock when I got it.
To check stearing head "notch", get a friend to help, put the bike on it's side stand and pull the bike over onto the stand. The back needs to stay down and the front lift. With the front in the air move the bars slowly side to side. It should be a smooth sweep side to side, 1 central sticking point would suggest a notch.
As for chain; get the rear airbourne as you would to lube the chain (race stand, trolley jack under swingarm (close to shock mount). With the motor off, check chain movement, roll the wheel 1/4 turn and check chain movement again. repeat several times. If the chain is screwed it will have tight spots and the tension will change depending on where the tight spot is. Try lubing the chain (after a ride of best effect) and checking again. If a chain is just a little dry, tight spots can be worked out.
Sprocket teeth should be even, almost triangle shaped. If one side is more curved than the other then it's worn. It's always best to change chains and sprockets together.
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07 ZX10R since new, tracky TBA, KX450F, 87 CR250 restoration, GT MTB - I've got serious thrill issues, dude